The Wombat File Is Yours to Keep

The Wombat has been very very very very busy. Because of this. See all the posts marked "LitEditor" and you'll have some idea why.

Just enough time in between tasks to pepper-spray your brain with this week's cognitive defoliant. Ready?

The elder was born in New York, the younger in Idaho. They shared a profession. Their lifespans overlapped for only seven years, but between the two of them, their joint experiences spanned the bulk of the 19th and 20th centuries. Of the former, the latter said "His crudity is an exceeding great stench but it is America."

Name the two men.

First correct answer posted to comments wins a zip-file of user icons deemed inappropriate for use on a family website. No Googling or doing one of those SETI-style distributed computing projects where everybody's screensaver works to eliminate the nearly-infinite number of possible but incorrect answers. One guess (at both names) per comment, but comment as often as you like.